ATutor - Free, open source LMS with integrated social networking
PTC Windchill - Windchill offers breakthrough Product Lifecycle Management (PLM) capabilities, unleashing more data to more stakeholders throughout your organization through a single source of truth for product data and processes.
Sublime Tutor - Learn Sublime Text from a tutor who sits inside the editor
Propel - Propel is a customer-centric PLM software built on Salesforce App Cloud platform.
TutorMe - Connect with a high-quality tutor in under 30 seconds
SAP PLM - SAP Product Lifecycle Management (SAP PLM) application provides you with a 360-degree-support for all product-related processes - from the first product idea, through manufacturing to product service.